Fredrik and his family arrive on La Palma for their Christmas getaway. Meanwhile, researcher Marie fears the island's volcano could soon erupt.

Marie and Alvaro try to convince authorities that the ash eruption is only the beginning. Sara wants to get away after an argument between her parents.

Jens weighs an unethical opportunity that could help his family. Stranded by the evacuation, Fredrik and Marie search for alternative ways to safety.

With the catastrophic tsunami looming, Jens tries to tell the survivors to reach a safe spot on Tenerife — before it's too late.